| File name: | AntispamUpdate.exe |
| Full analysis: | https://app.any.run/tasks/332db513-0176-4fcf-95fb-409ab5dd868d |
| Verdict: | Malicious activity |
| Threats: | DCrat, also known as Dark Crystal RAT, is a remote access trojan (RAT), which was first introduced in 2018. It is a modular malware that can be customized to perform different tasks. For instance, it can steal passwords, crypto wallet information, hijack Telegram and Steam accounts, and more. Attackers may use a variety of methods to distribute DCrat, but phishing email campaigns are the most common. |
| Analysis date: | October 10, 2024, 11:13:13 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows |
| MD5: | A211E2975C6F8B8350682198B237ABA7 |
| SHA1: | 00637164DE3CB747740EEC28466DC1C1F06C80B2 |
| SHA256: | 00EBCC0BE7BCC0F0CB132A42A922033EAE42C535DACC3094EBAFA1AD3F54A773 |
| SSDEEP: | 98304:0/qPyub0pJ5RnpkrbI2fiDipVDrTCYRtRVVHyKVLePXJ0h0Mm6p5v1eOGqlsUk1r:plwcrB |
MALICIOUS
DARKCRYSTAL has been detected (SURICATA)
- AntispamUpdate.exe (PID: 6728)
Run PowerShell with an invisible window
- powershell.exe (PID: 5896)
Connects to the CnC server
- AntispamUpdate.exe (PID: 6728)
SUSPICIOUS
Connects to unusual port
- AntispamUpdate.exe (PID: 6728)
Starts POWERSHELL.EXE for commands execution
- AntispamUpdate.exe (PID: 6728)
INFO
Creates files or folders in the user directory
- AntispamUpdate.exe (PID: 6728)
Checks supported languages
- AntispamUpdate.exe (PID: 6728)
Changes the registry key values via Powershell
- AntispamUpdate.exe (PID: 6728)
UPX packer has been detected
- AntispamUpdate.exe (PID: 6728)
Drops encrypted JS script (Microsoft Script Encoder)
- AntispamUpdate.exe (PID: 6728)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win32 Executable MS Visual C++ (generic) (16.3) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (14.5) |
| .dll | | | Win32 Dynamic Link Library (generic) (3.4) |
| .exe | | | Win32 Executable (generic) (2.3) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2024:05:16 11:08:48+00:00 |
| ImageFileCharacteristics: | No relocs, Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 14 |
| CodeSize: | 1703936 |
| InitializedDataSize: | 8816640 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x13c060 |
| OSVersion: | 6 |
| ImageVersion: | - |
| SubsystemVersion: | 6 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 2024.5.16.1107 |
| ProductVersionNumber: | 4.3.4074.0 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Windows NT 32-bit |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | English (U.S.) |
| CharacterSet: | Unicode |
| CompanyName: | OPSWAT, Inc. |
| FileDescription: | MDES SDK V4 3rd Party Host |
| FileVersion: | 2024.5.16.1107 |
| InternalName: | wa_3rd_party_host_32.exe |
| LegalCopyright: | © OPSWAT, Inc. All rights reserved. |
| OriginalFileName: | wa_3rd_party_host_32.exe |
| ProductName: | MDES SDK V4 |
| ProductVersion: | 4.3.4074.0 |
Total processes
132
Monitored processes
3
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3648 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | powershell.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5896 | powershell -WindowStyle hidden -Command "if (-Not (Test-Path \"HKCU:\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\App\")) { Set-ItemProperty -Path \"HKCU:\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\" -Name \"App\" -Value \"C:\Users\admin\AppData\Local\Temp\AntispamUpdate.exe\" }" | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | — | AntispamUpdate.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows PowerShell Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 6728 | "C:\Users\admin\AppData\Local\Temp\AntispamUpdate.exe" | C:\Users\admin\AppData\Local\Temp\AntispamUpdate.exe | explorer.exe | ||||||||||||
User: admin Company: OPSWAT, Inc. Integrity Level: MEDIUM Description: MDES SDK V4 3rd Party Host Version: 2024.5.16.1107 Modules
| |||||||||||||||
Total events
4 132
Read events
4 131
Write events
1
Delete events
0
Modification events
| (PID) Process: | (5896) powershell.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | App |
Value: C:\Users\admin\AppData\Local\Temp\AntispamUpdate.exe | |||
Executable files
0
Suspicious files
2
Text files
2
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 6728 | AntispamUpdate.exe | C:\Users\admin\AppData\Local\config | binary | |
MD5:9EF744D5A800C7A9E348E428FB5BF164 | SHA256:4FED0303642339824214B536A8AE5B9ECC065DB0BEF90D25CF0549044238A3DC | |||
| 5896 | powershell.exe | C:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_ugxyq11b.omg.psm1 | text | |
MD5:D17FE0A3F47BE24A6453E9EF58C94641 | SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7 | |||
| 5896 | powershell.exe | C:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_mowjqj5h.ysc.ps1 | text | |
MD5:D17FE0A3F47BE24A6453E9EF58C94641 | SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7 | |||
| 5896 | powershell.exe | C:\Users\admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive | binary | |
MD5:D613316D9318373FF03676DE23651D54 | SHA256:8612C657B471353CCDD367617DE44B9D53C58BDB0581A48473538DE04FC43548 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
10
TCP/UDP connections
61
DNS requests
18
Threats
8
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
5488 | MoUsoCoreWorker.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
5488 | MoUsoCoreWorker.exe | GET | 200 | 23.53.40.178:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
4360 | SearchApp.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D | unknown | — | — | whitelisted |
5736 | svchost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
6728 | AntispamUpdate.exe | POST | 429 | 46.8.232.106:80 | http://46.8.232.106/ | unknown | — | — | unknown |
4260 | backgroundTaskHost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAn5bsKVVV8kdJ6vHl3O1J0%3D | unknown | — | — | whitelisted |
6728 | AntispamUpdate.exe | POST | 200 | 46.8.236.61:80 | http://46.8.236.61/ | unknown | — | — | unknown |
6612 | SIHClient.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | unknown | — | — | whitelisted |
6612 | SIHClient.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
— | — | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
5488 | MoUsoCoreWorker.exe | 23.53.40.178:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
5488 | MoUsoCoreWorker.exe | 184.30.21.171:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
— | — | 184.30.21.171:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
4020 | svchost.exe | 239.255.255.250:1900 | — | — | — | whitelisted |
4360 | SearchApp.exe | 104.126.37.139:443 | www.bing.com | Akamai International B.V. | DE | whitelisted |
4360 | SearchApp.exe | 192.229.221.95:80 | ocsp.digicert.com | EDGECAST | US | whitelisted |
5736 | svchost.exe | 20.190.159.2:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
www.bing.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
login.live.com |
| whitelisted |
go.microsoft.com |
| whitelisted |
th.bing.com |
| whitelisted |
client.wns.windows.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
6728 | AntispamUpdate.exe | Misc activity | ET USER_AGENTS Go HTTP Client User-Agent |
6728 | AntispamUpdate.exe | Misc activity | ET USER_AGENTS Go HTTP Client User-Agent |
6728 | AntispamUpdate.exe | Misc activity | SUSPICIOUS [ANY.RUN] Possible DarkCrystal Rat Encrypted Connection |
6728 | AntispamUpdate.exe | Misc activity | SUSPICIOUS [ANY.RUN] Possible DarkCrystal Rat Encrypted Connection |
4 ETPRO signatures available at the full report